Detachable boat-motor.



J. A. BAGGER. DEIACHABLE BOAT MOTOR. u-mcmoa FILED nov. 24. mo.

1 mm 06L 29,191&

UNITED STATES PATENT OFFICE.

JOHN ALBAN BAGGER. F STOCKHOLM, SWEDEN.

DETACHABLE BOATJYIOTOR.

Application llled November 24, 1816 Serial No. 133,156.

To all whom it may concern:

Be it known that I, JDIIN Aumn limo-nu, a subject of the Kim; of Sweden, lt'mltllllg at Stockholm, in the Kingdom of Sweden. have 6 invented a new and ueeful Improvement in Detachable Boat-Motors, of which the following is a specification. In detachable boat motors a reversing dcvlee is previously known in which the pro- 0 'peller screw and its shaft. are movable in thehorizontal plane, so that it may be swung from its position for forward to its Iltlfiltion for back. This device is impractiettble in so far that when being moved from 16 forward to back the propeller arts in a direction at right angles to the boat. tllllh altering the course of the boat, which is a goat-disadvantage in view of the fact. that t reversing-device is mostly need when put e ting to at landing-stages, and so forth.

his disadvantage is completely eliminated by the present. invention which is broadly characterized by this that the proeller is arran ed to be swung at least. 180-" In a vertiealp one. The propeller can thus not act; inlateral direction, hence it does not. tendto alter the course of the boat, and the additional advantage is also attained that by. adjusting the propeller in greater or smaller angles to its horizontal position the propelling or reversing effect of the same may be regulated.

. n the accompanying drawing an emhodi' meat of the invention is shown by way of example.

i -re 1 shows a Bitleview ot' a hunt with Etta 0d detachable boat motor providt-d with a revel-sin device for the propeller arcording to'the invention. Fig. 2 shows to a larger scale the gearing and reversing device tetween the motor shaft; and the propeller shaft. Fig. 3 shows a vertical section of the same device. Fig. 4 shows a perspective view of the rgvernihle member forming a.

bearing for the-propeller shaft.

The driving shaft of the motor is arranged in a sleeve 1 to whieh the rudder 2 is secured. The driving Hliu ft is connected with the propeller shaft 3 through h suitable gearing journalerl in a casin 4 at the lower endof the sleeve 1. According to the invention'the-propeller shaft is not in'imovahly Ienrnaled in the casing, but it may be swung n the vertical plane within an angle of l1'bout 180, that is to say in the plane through the stem and the stermpost of the -Bpeolfloatlon of Letters Patent.

with a toothed segment or a pinion 6 contu-ctrd to the bearing of the propeller shaft in such manner that the who it is swung when the gear-wheel is rotated. At its upper end Ill tlu wirinity or the motor the rock meshes with a pinion secured to the shaft ot a hand lr\(-| 7 adjustable on n toothed are S.

i'M-cording to the embodiment (it the gear ing shown in bios. 2 to 4 the sleeve 1 in so rured at its lower end to a boss on the one half of the tuning 4 the other half of which in Stltlll'tl hy means of arrows l] to a Rllltltl 12 on the first half. A ring 13 (Fig. 4) in journalrd lltl.\\'(u|l the two halves of the casing 4, the said ring being fnlerumed on a shaft. 14 journaled in the walls of the easing. The ring 13 is provided with a heat": ing; sleeve 14 in which the propeller shaft 15 is; jourualed, and is connected by means of arms 16 with the pinion ti eoacliug'wilh the toothed rack. 'lho rack is preferably guided in a sleeve 17 projecting upward from the upper side of the casing 4. A similar sleeve 22' of suitable length may also he provided on the lower side of the casing '1 it required owing to the length of the toothed rack. 'lo the shaft II the bevel gear 18 is .llt'lllld '\\'lllt'll nit-shes with the bevel gear ltl on the motor shaft. 20, and llu' hovel gear 2| which is rigidly ronnueted with the bevel gear 18 and meshes with the bevel gear 22 on the propeller shaft 15. lly moving, the rurloh the ring 13 will thus he turned in omdirection or the other, and the propeller .whal't is swung eorrespomlingly without severing the driving eonnrotion between the motor shaft and the propeller shaft. in order to protert. the propeller 9 in its various positions from ehnelm or other outside influence it in suitable to surround the name by n guard ring 10 arranged in such manner that the propeller in allowed to swing freely. 'lliu device operates in the following mun not. When the n'opeller oeeupiee the position shown with full lines-t in Fig. 1, it. propels the boat. forward. When the propeller is swung downward so that the propeller tit) shaft oeeupies a vertical position, it has no pro ielling action but in this position it only tends to raise the stern of the boat. If the propeller is further swung into the horizontal position shown in dotted lines, the boat is driven back by the propeller. If the propeller is adjusted into an intermediate position between the vertical zero-position and the two horizontal extreme positions, it acts more or less propelling or backing according to the angle of inclination. It is thus possible by means of the present device easily to maneuver a boat forward and backward with great or lo\\ speed. and also to stop the boat without changing the speed or the direction of movement of the motor, and without the rourse of the boat becoming influeneed.

I claim:

1. In a detachable boat motor, the combination of a motor shaft, a propeller shaft adapted to be driven thereby. and means where y said propeller shalt may be swung relat ively to said motor shaft through an arc of approximately .180 in a substantially \ert ieal plane for the-purpose of making the propeller adjustable for driving the boat either forward or lniekn'ard, or for stoppin the same, without changing the direction 0 movement or the speed of the motor and without influencing the course of the boat.

In a detacha )le boat motor, the combination of a casing, a motor shaft journaled in said casing, a member journaled in said easing 0 as to be movable in a vertical plane about 180 relatively to the motor shaft, a propeller shaft jonrnaled in said member, means for transmitting motion from said motor shaft to the propeller shaft, and means for adjusting the position of said movable member in the casing, substantially as and for the purpose set forth.

er at approximately right' angles to the' shaft of the same, means for transmittin motion from said motor shaft to the rope ler sha ft, a pinion attached to the sat member, a rack journaled in the easing and meshing with said pinion, another pinionfuh erumed outside the casing and meshing with the rack, a hand-lever secured to said pinion, a pawl on said lever, and a toothed are 00- operating with the said pawl for adjustment of the position of said lever, substantially as and for the purpose set forth.

4. In a detachable boat motor, the combination of acasin a motor shaft journaled in said casing, a lievel gear .on said motor shaft, another shaft journaled in the casing at approximately right angles to the motor shaft, a member journaled on said shat't so as to be movable in a vertical lane about 180 relatively to the motor shaft, a propeb ler shaft journaled in the said member at approximately right angles to the shaft of the same, a bevel gear on said propeller shaft, a bevel gear on the said shaft in the casing meshing with the bevel gear on the motor shaft, another gear on the said shaft, rigidly connected to the first named bevel gear and meshing with theigear on the pro-' pcller shaft, a pinion on the sald member, a rack jonrnaled in the casing and meshing with the said pinion, and means for adjusting the position of said rack, substantially as and for the or use set forth.

J H ALBAN BAGGER. 

